Evolution

Question 1

What is Darwin’s theory of evolution?

Answer 1

Evolution by natural selection

Everything evolved from simple life forms 3 billi years ago

explained his finding in the book “origin of species” which was published in 1859

Question 2

Why was Darwin’s theory only gradually accepted?

Answer 2

conflicted with the religious view that God made all the animals and plants

Darwin did not have the evidence to convince scientists

took 50 years after it was published to discover how variation and inheritance worked

Question 3

What was Lamarck’s theory?

Answer 3

a characteristic which is used by an organisms becomes bigger and stronger

one that is not used disappears

any feature that is altered is passed to offspring

Question 4

How natural selection occurs?

Answer 4

individual organisms in a species show a range of variation because of genetic differences

individuals with characteristics are more like to survive and breed

the genes that enabled the individuals to be successful are passed on to the next generation